EP0366834B1 - Verfahren zur Herstellung von Eisenoxidpulver - Google Patents

Verfahren zur Herstellung von Eisenoxidpulver Download PDF

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Publication number
EP0366834B1
EP0366834B1 EP88121026A EP88121026A EP0366834B1 EP 0366834 B1 EP0366834 B1 EP 0366834B1 EP 88121026 A EP88121026 A EP 88121026A EP 88121026 A EP88121026 A EP 88121026A EP 0366834 B1 EP0366834 B1 EP 0366834B1
Authority
EP
European Patent Office
Prior art keywords
solution
iron oxide
value
powdered iron
chloride solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP88121026A
Other languages
English (en)
French (fr)
Other versions
EP0366834A3 (en
EP0366834A2 (de
Inventor
Naoe C/O Chemirite Ltd. Hirai
Tohoru C/O Chemirite Ltd. Murase
Katsunobu C/O Tdk Corporation Okutani
Teruo C/O Tdk Corporation Mori
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chemirite Ltd
TDK Corp
Original Assignee
Chemirite Ltd
TDK Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chemirite Ltd, TDK Corp filed Critical Chemirite Ltd
Publication of EP0366834A2 publication Critical patent/EP0366834A2/de
Publication of EP0366834A3 publication Critical patent/EP0366834A3/en
Application granted granted Critical
Publication of EP0366834B1 publication Critical patent/EP0366834B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
    • C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
    • C22B3/10—Hydrochloric acid, other halogenated acids or salts thereof
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/0018—Mixed oxides or hydroxides
    • C01G49/0072—Mixed oxides or hydroxides containing manganese
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • C01G49/06—Ferric oxide [Fe2O3]
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B47/00—Obtaining manganese
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S423/00—Chemistry of inorganic compounds
    • Y10S423/01—Waste acid containing iron

Definitions

  • FIG. 1 shows a diagrammatic view of an apparatus for carrying out such a process, wherein the flow is explained below.
  • a reservoir 1 is filled with a waste hydrochloric pickling solution 6, and the reservoir 1 is connected to the first inlet 26 of a contact tower 2 by means of a conduit 31.
  • a second inlet 25 of the contact tower 2 is supplied with hot gas 3 from a roasting furnace 5.
  • the roasting furnace 5 has a first inlet 20 through which hot air 10 is supplied, while an outlet 22 of the roasting furnace 5 is connected through a conduit 23 to a dust collector 7 which in turn is connected by a conduit 24 to the second inlet 25 of the contact tower 2.
  • the invention has been made after having extensively studied the influences of the impurities contained in powdered iron oxide which had been produced by the oxidizing roasting of a crude iron chloride solution of the ferrite properties of a soft ferrite. These studies revealed that the ferrite properties are remarkably improved by controlling the P content of powdered iron oxides so that the P content is not more than 0,005 % by weight. Also, it was found by the inventors that the P content contained in a crude iron chloride solution can be decreased to a very low content by an advantageous new treatment.
  • the present invention provides methods for producing powdered iron oxide by oxidizing roasting an iron chloride solution when P has been removed intensively from this solution, wherein the described methods for removing phosphorus P from the solution present the striking advantage that they can be carried out very easily, with the result that powdered iron oxide can be produced in a simple and cheap manner as compared with the conventional crystal refining method.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Ceramic Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structural Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Compounds Of Iron (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Magnetic Ceramics (AREA)
  • Soft Magnetic Materials (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Claims (4)

  1. Verfahren zum Herstellen von pulverförmigem Eisenoxid durch oxidierendes Rösten einer Eisenchloridlösung,
    gekennzeichnet durch folgende Verfahrensschritte:
    - der pH-Wert einer rohen Eisenchloridlösung wird auf einen Wert in dem Bereich von 2,5 bis 4,5 eingestellt,
    - die Lösung wird einem Hindurchleiten von Luftblasen ausgesetzt, das solange fortgesetzt wird, bis eine Lösung erhalten wird, deren pH-Wert nicht kleiner als 1,5 ist und die unlösliche Fe³⁺ Verbindungen in einer Menge von 0,01 bis 0,1 Gew.-%, gerechnet als Fe, enthält,
    - die unlöslichen Bestandteile werden von der Lösung durch Filtrierung getrennt und
    - das resultierende Filtrat oder die gereinigte Lösung werden dann geröstet und oxidiert, um pulverförmiges Eisenoxid zu erzeugen, das einen P-Gehalt von nicht mehr als 0,005 Gew.-% besitzt.
  2. Verfahren nach Anspruch 1,
    dadurch gekennzeichnet,
    daß die Einstellung des pH-Wertes durchgeführt wird durch Verwendung einer Alkaliverbindung, wie z.B. von wässrigem Ammoniak, und/oder durch Lösen von Stahlschrott oder Walzzunder in eine Eisenchloridlösung.
  3. Verfahren nach Anspruch 1 oder 2,
    dadurch gekennzeichnet,
    daß das Hindurchleiten von Luftblasen mindestens 20 Minuten lang fortgesetzt wird.
  4. Verwendung des Eisenoxides, erhalten mit einem Verfahren nach einem der Ansprüche 1 bis 3, zur Herstellung von Ferrit, insbesondere von weichem Ferrit.
EP88121026A 1988-10-17 1988-12-15 Verfahren zur Herstellung von Eisenoxidpulver Expired - Lifetime EP0366834B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP63259448A JP2672985B2 (ja) 1988-10-17 1988-10-17 鉄とマンガンを含有する精製溶液およびその製造方法
JP259448/88 1988-10-17

Publications (3)

Publication Number Publication Date
EP0366834A2 EP0366834A2 (de) 1990-05-09
EP0366834A3 EP0366834A3 (en) 1990-06-13
EP0366834B1 true EP0366834B1 (de) 1995-03-01

Family

ID=17334219

Family Applications (2)

Application Number Title Priority Date Filing Date
EP88121026A Expired - Lifetime EP0366834B1 (de) 1988-10-17 1988-12-15 Verfahren zur Herstellung von Eisenoxidpulver
EP89119089A Expired - Lifetime EP0364904B1 (de) 1988-10-17 1989-10-13 Gereinigte Lösung, die Eisen und Mangan enthält und Verfahren zu deren Herstellung

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP89119089A Expired - Lifetime EP0364904B1 (de) 1988-10-17 1989-10-13 Gereinigte Lösung, die Eisen und Mangan enthält und Verfahren zu deren Herstellung

Country Status (6)

Country Link
US (2) US5032367A (de)
EP (2) EP0366834B1 (de)
JP (1) JP2672985B2 (de)
KR (2) KR910004860B1 (de)
AT (1) ATE119137T1 (de)
DE (2) DE3853211T2 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR920016348A (ko) * 1991-02-05 1992-09-24 도오사끼 시노부 고순도 산화철 및 그 제조방법
US8287738B2 (en) * 2009-04-21 2012-10-16 E I Du Pont De Nemours And Company Process for removing impurities from iron chloride solutions
US8182779B2 (en) * 2009-04-21 2012-05-22 E. I. Du Pont De Nemours And Company Process for removing phosphorus-containing colloids and their precursors from iron chloride solutions
WO2012094559A1 (en) * 2011-01-06 2012-07-12 Jan Pavlicek Process for the purification of iron salt solutions
CN105540950A (zh) * 2015-12-24 2016-05-04 浙江奇彩环境科技股份有限公司 一种铁黄反应液资源化处理的方法
CN106702141B (zh) * 2016-12-30 2018-03-13 山东盛荣新材料有限公司 一种利用赤泥制备赤铁锰铝复合材料的方法
KR20180085173A (ko) 2017-01-18 2018-07-26 박영길 슈퍼 엔지니어링 플라스틱 재생 시스템

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1773235A (en) * 1927-04-06 1930-08-19 Lafayette M Hughes Two-stage method of chlorinating ores
FR976966A (fr) * 1942-05-22 1951-03-27 Colin & Cie Procédés de récupération du fer et autres métaux à partir de bains de décapage usés et autres déchets ou de solutions de leurs sels et appareillage pour la miseen oeuvre de ces procédés
US2423385A (en) * 1944-07-27 1947-07-01 Chemical Foundation Inc Process of pickling and of recovering pickling agent
IE34837B1 (en) * 1970-05-15 1975-09-03 Electrolyt Zinc Australasia Method of removing dissolved ferric iron from iron-bearing solutions
US3903236A (en) * 1972-11-27 1975-09-02 Deepsea Ventures Inc Method for obtaining metal values by the halidation of a basic manganiferous ore with ferric chloride pre-treatment
JPS5211604B2 (de) * 1972-07-27 1977-04-01
GB1463099A (en) * 1974-09-05 1977-02-02 Nippon Electric Co Process for treating acidic waste containing ferrous ions
CA1061568A (en) * 1975-01-17 1979-09-04 Antoine Van Peteghem Process for extracting metal values from manganiferous ocean floor nodule ore
US4120156A (en) * 1977-06-08 1978-10-17 The Garrett Corporation Turbocharger control
JPS5973439A (ja) * 1982-10-19 1984-04-25 Nippon Steel Corp 塩酸酸洗廃液から酸化鉄を製造する方法
JPS6259530A (ja) * 1985-09-06 1987-03-16 Japan Metals & Chem Co Ltd 高純度マンガン化合物の製造方法
JPS62235221A (ja) * 1986-04-02 1987-10-15 Japan Metals & Chem Co Ltd 高純度酸化鉄の製造法
JPS63117915A (ja) * 1986-11-07 1988-05-21 Sumitomo Metal Mining Co Ltd マンガンの少ない酸化鉄用原料の製法
JP2862875B2 (ja) * 1988-05-23 1999-03-03 ケミライト工業株式会社 フェライト用の酸化鉄

Also Published As

Publication number Publication date
KR900006239A (ko) 1990-05-07
US5200159A (en) 1993-04-06
EP0364904B1 (de) 1994-01-05
JP2672985B2 (ja) 1997-11-05
KR910004860B1 (ko) 1991-07-15
US5032367A (en) 1991-07-16
EP0366834A3 (en) 1990-06-13
EP0366834A2 (de) 1990-05-09
DE3853211D1 (de) 1995-04-06
DE68912060T2 (de) 1994-08-11
ATE119137T1 (de) 1995-03-15
DE68912060D1 (de) 1994-02-17
DE3853211T2 (de) 1995-10-26
EP0364904A3 (en) 1990-06-20
JPH02107529A (ja) 1990-04-19
KR910006422B1 (ko) 1991-08-24
EP0364904A2 (de) 1990-04-25
KR900006240A (ko) 1990-05-07

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